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Employee Benefits and Stock-based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Nov. 05, 2021	Jul. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Contribution expense			$ 700	$ 800	$ 800
Stock-based compensation expense, net			108,043	111,316	$ 111,158
Accrued stock-based compensation expense liabilities			$ 6,200	$ 3,600
Closing price of stock			$ 76.72
Employee stock purchase plan awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected dividend yield			0.00%	0.00%	0.00%
Executive [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional stock-based compensation expense, net related to departure recognized				$ 1,600	$ 1,700
Stock options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost, stock options			$ 1,600
Weighted average recognition period			4 months 2 days
Restricted Stock and Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting schedule			1/4th of the shares on the first anniversary service date of the grant and 1/16th of the shares vest every 3 months thereafter, so as to be 100% vested on the fourth anniversary of the vesting commencement date.
Restricted stock units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average recognition period			2 years 4 months 20 days
Total unrecognized compensation cost, restricted stock units			$ 154,100
Aggregate intrinsic value of unvested restricted stock units			203,000
Total fair value of vesting dates of restricted stock units vested			$ 64,000	$ 88,000	$ 122,000
Restricted stock units [Member] \| Executive [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Acceleration of vesting of shares of unvested equity awards				24,559	35,703
2021 EIP [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ordinary shares reserved for issuance			3,100,000
Maximum number of ordinary shares reserved for issuance			6,834,208
Increase in ordinary shares reserved for issuance		1,750,000
2017 Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional ordinary shares reserved for issuance	0
ESPP [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price of ordinary shares, percentage			85.00%	85.00%	85.00%
Percentage of salary contribution by employees			15.00%
Additional ordinary shares reserved for issuance			994,543
ESPP [Member] \| Scenario, plan automatically increased by the lessor of [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual increase in ordinary shares for available for future issuance			1,500,000
Annual shares increase for future issuance by percentage under 2012 employee stock purchase plan			1.25%